<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <el-form-item label="讲师头像">

        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
        </el-button>

        <!--
          v-show：是否显示上传组件
          :key：类似于id，如果一个页面多个图片上传控件，可以做区分
          :url：后台上传的url地址
          @close：关闭上传组件
          @crop-upload-success：上传成功后的回调
            <input type="file" name="file"/>
        -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/oss/upload'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>

  </div>
</template>

<script>
  import teacher from '@/api/teacher/list'
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'

  export default {
    components:{ImageCropper,PanThumb},
    name: "add",
    data() {
      return {
        teacher: {},
        imagecropperShow:false, //上传弹框组件是否显示
        imagecropperKey:0,  //上传组件key值
        BASE_API:process.env.BASE_API,//获取dev.env.js的BASE_API的值
        saveBtnDisabled:false //保存按钮是否禁用
      }
    },
    methods: {
      saveOrUpdate() {
        //判断当前teacher有没有ID
        if(this.teacher.id==undefined || this.teacher.id==null){
          //添加
          this.save()
        }else {
          //修改
          this.update()
        }
      },
      //添加
      save() {
        teacher.saveOrUpdate(this.teacher).then((res) => {
          if (res.success) {
            this.$message({
              type: 'success',
              message: '添加成功!'
            })
            //清空表单
            this.teacher = {}
          }
        })
      },
      update(){
        teacher.update(this.teacher).then(res=>{
          if(res.success){
            this.$message({
              type: 'success',
              message: '修改成功!'
            })
            //清空表单
            this.teacher = {}
          }
        })
      },
      //关闭弹框
      close(){
        this.imagecropperShow = false
        this.imagecropperKey += 1
      },
      //上传成功方法
      cropSuccess(data){
        this.teacher.avatar = data.url
        this.close()
      }
    },
    created() {
      if(this.$route.params && this.$route.params.id){//  路径中存在id
        const id = this.$route.params.id
        //根据id查询teacher
        teacher.findById(id).then(res=>{
          this.teacher = res.data.eduTeacher
        })
      }
    },
    watch:{ //监听器
      $route(to,from){  //监听路由变化, 路由发送变化时执行
        this.teacher = {}
      }
    }
  }
</script>

<style scoped>

</style>
